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Sample Mean Calculator

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About This Tool

The online Sample Mean Calculator is used to calculate the sample mean of a set of numbers.

Sample Mean

The sample mean is the average of all the items in a sample (a group of observations). The following is the formula for the sample mean x of a set {x1, x2, ..., xn} of n observations from a given distribution:

Sample Mean Formula

Sample Mean and Population Mean

The population mean is the average of all the items in a population. Because a population is usually very large or unknown, the population mean is usually an unknown constant. An estimate of the population mean is the sample mean.

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